Automatic valve of disk form.



To all whom it may concern:

STEEHEN EVANS ALLEY, 0F

GLASGOW, SCOTLAND, AND ROBERT MoGREGOR, or

LONDON, ENGLAND.

AUTOMATIC VALVE 0F DISK FORM.

. Be it knownthat we, STEPHEN Evans At- LEY and Ronnn'r MCGREGOR, subjects of the King of Great Britain and Ireland, and residents; respectively, of Glasgow, Scotland, and London, England, have invented certain new and useful Improvements in Automatic Valves of Disk Form, of which the following is thespecification.

The. invention has for its object to provide a simple and efl'ectivc. form of externally spring-controlled disk valve.

A. valve made according to the invention is; of thin-parallel-sided annular form'and may controlorie ormore series of the usual annular ports. Where it controls more than one series of ports, it is annularly slotted to permit of theescape of the fluid it controls 1 from the intermediate pol-ts. It is held upon its seat by a series of hollowplungers symmetrically disposed; around the valve with their axes normalto it operating in =cylindrical cavities in theusual guard above the valveiand' projections upon the ends of whichor of some of which engage recesses in the valve. Springs acting in compression are arranged between the plungers and the inner ends of the cavities in which they work, and serve to control the movements of the valve. I 1 y In order that the invention and the n1anner of performing the same may be properly understood, there is hereunto appended a sheet of explanatory drawings illustrative of an example of the improved valve and allied parts, Figure 1 being a divided plan and Fig. 2 a sectional elevation.

In this example the thin annular valve A controlsa series of annular ports Il in a valve seat B-consequently it is m-nvided Specification of Letters Patent.

Application filed May 13, 1913.

i Patented Dec. 16, 1913.

Serial No. 767,431.

with a'series of annular fluid-escape slots A". It is hold inplace by a guard C in the usual arms of which are cylindrical cavities C in which are a series of hollow plungers D,'cn\'ities and plungers being symmetrically disposed around the valve with their axes normal to it Projections D on the ends of the plungersor, it might be only on twoof them-cngage recesses in the valve, these projections serve to locate the valve and are the, only means for so doing. Springs D acting in compression are arranged between the plungers D and the inner ends of the cavities C Vents E are provided'at the inner ends of the cavities What We claim is:-

In automatic valves, in combination, an annular disk valve controlling ports of usual form, a series of hollow plunger-s symmetrically disposed around the valve and bearing upon it, a usual guard above the valve, having cavities therein in which the plungers operate, and a series of springs acting between the inner ends of the cavities and the plungers, and means for locating the valve consisting of cooperating recesses and projections in the valve and on the plungers.

In testimony whereof we have signed our names to this specification, in the presence of subscribing witnesses.

STEPHEN EVANS ALLEY. ROBERT MCGREGOR. 

